2221222212101 has 4 divisors (see below), whose sum is σ = 2317797090912. Its totient is φ = 2124647333292.

The previous prime is 2221222212089. The next prime is 2221222212133. The reversal of 2221222212101 is 1012122221222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2221222212101 - 2⁶ = 2221222212037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221222212151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48287439371 + ... + 48287439416.

It is an arithmetic number, because the mean of its divisors is an integer number (579449272728).

Almost surely, 2^{2221222212101} is an apocalyptic number.

It is an amenable number.

2221222212101 is a deficient number, since it is larger than the sum of its proper divisors (96574878811).

2221222212101 is an equidigital number, since it uses as much as digits as its factorization.

2221222212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96574878810.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2221222212101 its reverse (1012122221222), we get a palindrome (3233344433323).

The spelling of 2221222212101 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, one hundred one".